Music stand



May 19, 1925.

E. THIMGREN MUSIC STAND Filed April 24 Patented May 19, 1925.

EDWARD THIMGREN, 0F IPOIQ L MEXICO.

MUSIC STAND.

Application filed April 24, 1924. Serial No. 708,709.

To all whom it may concern.

Be it known that I, EDWARD THIMGREN, asubject of the King of Sweden, residing at Popotla, Distrito Federal, Mexico, have invented certain new and useful Improvements in Music Stands, of which the follow ing is a specification.

This invention relates to certain new and useful improvements in music stands of the type for supporting a continuous strip of sheet music that is wound from one roll to another roll and manually operable.

The primary object of the invention is to provide a music stand carrying journaled rollers upon which acontinuous sheet of music is wound with treadle operated mechanism associated with the roller for successively feeding the music sheet from one roller to another and also for reversing the direction of travel thereof.

With the above and other objects in view that will become apparent as the nature of the invention is better understood, the same consists of the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawing and claimed.

In the drawing, wherein like reference characters designate corresponding parts throughout the several views,

Figure 1 is a front elevational view, partly in section of a music stand constructed in accordance with the present invention showing the treadle operated mechanism for forwardly feeding and reversing the continuous music sheet,

Figure 2 is a vertical cross-sectional view taken on line II-II of Fig. 1 showing the inclined board or plate over which the music sheet travels,

Figure 3 is a vertical cross-sectional view taken on line IIIIII of Fig. 1 showing the pulley and belt arrangement for operating the music sheet rolls,

'Figure 4 is a detail sectional view taken on line IV-IV of Fig. 7 showing the double pulley block associated with the lower music roll,

1 connection between the double pulley and the single pulley associated with one end of the lower music roll,

Figure 8 is a side elevational view of one of the gears for operating the music sheet feeding mechanism,

Figure 9 is a detail sectional view of another form of operating mechanism, and

Figure 10-is a detail sectional view showing the operating gears in side elevation as illustrated in Fig. 9.

The music stand embodies a frame having spaced standards 1 and 2, each embodying a rear wall 3, side walls 4 and a front wall 5, the front wall 5 being provided with a horizontal offset housing 6 intermediate the upper and lower ends thereof while the lower end of the standard is provided with a relatively wide base structure 7 forming a substantial support for the stand, the two base supports 7 of the standard being connected at their lower ends by the cross board 8 as shown in Figs. 1 and 9. The wall formation of each standard provides a housing 9 and the lower end of each inner side wall 4: has an angle wall 10 attached thereto forming a housing 11 open at its forward side and of a form as illustrated in Fig. 2.

The upper ends of the standards are connected by a board 12 over which the sheet music flatly passes, the board being .arranged at an inclination as illustrated in Fig. 2 and being carried by the angle brackets 13 secured to the standardswith tensioned guide arms or rods 14: associated with the board 12 for holding the sheet music 15 in proper position during travel over the board. A music roll 16 is removably journaled in the upper end of each side standard and another music roll 17 is removably journaled in the outer ends of the offset housings 6, the sheet of music 15 passing from one roll to the other by treadle operated mechanism to be hereinafter described.

A double grooved pulley block 18 is fixed to a stub shaft that is journaled through the inner wall 4. of the upper end of the standard 2 and has a key end for interlocking with the adjacent end of the music roll 16, the opposite end of the roll having a socket 19 to receive the spring pressed pin 20 as shown in Fig. 6 and carried by the upper end of the standard 1 for removably journalling the roll 16 at the upper end of the stand. A similar double grooved roller 21 is journaled in the inner side wall 4: of the standard 2 in vertical alinement with the pulley 18.. A single pulley 22 located in the lower end of the housing 9 of the standard 2 is fixed to one end of the shaft 23 that is journaled in the walls 4: and 10 as shown in Fig. 1 and is in vertical alinement with the outer groove in the upper pulley block 18. An endless belt 24 passes over the inner grooved portions of the pulley blocks 18 and 21 and an endless belt 25 passes over the lower pulley block 22 and over the outer grooved portion of the upper pulley block and spaced from the intermediate pulley block '21 as shown in Figs. 1 and 7. A shafti26journaled transversely of the outer end of the housing 6 carried by the standard2 has a pulley 27 fixed thereto in alinement with the outer groove in the pulley block 21, an endless belt 23 passing over the pulley 27 and the outer grooved po'rtionof the pulley block 21 as shown in Figs. 3 and 7. The end of the shaft 26 projeotingthrough the inner wall 4 of the standard is provided with a key end that is received in a soclret in the adjacent end of the musicroll '17 while the other end of said music roll is supported in a manner as illustrated in 6.

As shown more clearly in Figs. 1 and 8, a gear wheel 29 freely supported upon the shaft 23 within the housing 11 encloses a ratchet wheel 30, a tensioned pawl 31 carried by the gear 29 engaging the ratchet wheel 3 I to cause rotation of the shaft 23 in one direction when the gear 29 is rotated. The operating means for the gear 29includes a rack segment 32 fixed to the shaft 33 journaled in the walls 4; and 10, the shaft 33 carrying an angular extension 34c disposed'betweeu the standards with a terminal extension 35 extending through the forward open side of the compartmen 11. A treadle 36 pivotally mounted at one end as at 37 in the supporting base '7 and normally spring pressed upwardly as at 38 overlies the ter- .minal extension of the shaft 33 an-dupon lowering movementof the treadle 36 under pressure of a foot, the shaft 33 is rotated to cause the rack segment 32-tobe moved into engagement with and rotate the gear 29 by the pawl and 'ratchet mechanism 31,-30, thismovement elfecting rotation oftheshaft 23 andpfulley 22 fixed thereonnn'd in turn the several pulleys and belt connectionsheretofore described forcausing the-music sheet .15 to he unwound from the" roll 17 and wound upon the roll 16, being i-noted-that the music sheet-isrfed.upwardly of the'supportingboard 12 in a step by step movement, and

at .the conclusion of each operation, the

spring 38 elevatesthetreadle 36 and the connection between the treadle an'dterminalextension 35of the shaft 33 causesa reverse direction .Of-rotation of the gear 29 with the shaft 23 remaining stationary;

g-Meehanism is provided for reversing the direction of rotation of the music rolls 16 and 17 and is adapted to be operated for rewinding the music sheet upon the roll 17 before removal from the stand and includes a shaft 39 jour'naled in the walls 4 and 10 as shown in Fig. 1 having gears 40 and ll secured to opposite ends thereof. An idler gear 42 rotatably supported upon the wall 4: meshes with the gear 40, the idler gear 42 in turn meshing with the gear 4:3 fixed to "the shaft 23 in the compartment 9. A shaft 23journaled in the walls land 10 associated with the standard '1 carries a fixed gear 44: meshing with the gear 41. A gear and ratchet mechanism 29 similar to the gear 29 shown in Fig. 8 is associated with the'shaft .23 and a rack segment 32 secured to the shaft 33 carries the'terminal extension 35 with which the treadle 36 is associated. It will therefore be seen that through the interposition-mg of the several gears and the operationof the treadle 36 reverse rotation of the pulley blocks and belts associated therewith will be effected to cause-the music sheet to be re wound upon :the music roll 17.

A modification of .the invention .is shown in Figs. 9 and 10 wherein the lower pulley 22 is secured to the shaft 23 within. the compartments 9 of the standard 1, a train of three gears 45 being associated with the shaft 23 while a traiirof four gears 46' is associated with the shaft23, the remaining elements of constructionand method of operation being-the same.

From the above detail description of the device, it is believed thatthe construction and operation thereof will at once be apparent, and while there areherein shown and described the ;jbreferrecl embodiments of the present invention, it is -.nevertheless to be understood that minor changesmay be, made therein' without cleparting from the spirit and scope of the invention as claimed.

ll' hat is clain'ied as new is-:

1. In a music stand, a frame, spaced rolls carrying a music sheet journalled on the frame. means for selectively rotating the rolls in reverse directions, said means including a shaft journalled at the :lower end of the frame, a gear 'journalled on the shaft, pawl and ratchet mechanism forlocking the gear-to the shaft for effecting rotation of the shaft in one cirection,ashaft supported rack segment' associated with vthe gear, treadle mechanism for operatingthe"rack segment and; belt, and pulley connections be tween the music rolls and gear supporting shaft.

2. Ina musicstanchja frame, spaced rolls carrying a musicsheet jonrnalled on'the .frarne, .means for selectively rotating the rolls in reverse directions, an inclined board over which the music sheet travels from one roll to the other roll, said means including a sha'ft ournalled at the lower end of :the

frame, a gear journalle-d on the shaft, pawl and ratchet mechanism for locking the gear to the shaft for effecting rotation of the shaft in one direction, a shaft supported rack seg ment associated with the gear, treadle mechanism for operating the rack segment and belt and pulley connections between the music rolls and gear supporting shaft.

3. In a music stand, a frame, spaced rolls carrying a music sheet journalled on the fame, means for selectively rotating the rolls in reverse directions, an inclined board over which the music sheet travels from one roll to the other roll, spring devices engaging the opposite edges of the sheet to hold the same in flat contact with the board, said means including a shaft journalled at the lower end of the frame, a gear journalled on the shaft, pawl and ratchet mechanism for locking the gear to the shaft for effecting rotation of the shaft in one direction, a shaft supported rack segment associated with the gear, treadle mechanism for operating the rack segment and belt and pulley connections between the music rolls and gear supporting shaft.

4;. In a music stand, a frame, spaced rolls carrying a. music sheet journalled on the frame, means for selectively rotating the rolls in reverse directions, said means including a shaft journalled at the lower end of the frame, a gear journalled on the shaft, pawl and ratchet mechanism for locking the gear to the shaft for eflecting rotation of the shaft in one direction, a shaft supported rack segment associated with the gear, treadle mechanism for operating the rack segment, belt and pulley connections between the music rolls and gear supportin shaft, said means further including a shaft journalled transversely of the frame, a second treadle operated shaft supported gear on the frame, and gear connections between the transverse shaft and the shafts supporting the treadle operated gears arranged in trains to effect reverse rotation of the music rolls when the last named treadle is operated.

5. In a music stand, a frame, spaced rolls carrying a music sheet ournalled on the frame, means for selectively rotating the rolls in reverse directions, an inclined board over which the music sheet travels from one roll to the other roll, said means including a shaft journalled at the lower end of the frame, a. gear ournalled on the shaft, pawl and ratchet mechanism for locking the gear to the shaft for effecting rotation of the shaft in one direction, a shaft supported rack segment associated with the gear, treadle mechanism for operating the rack segment, belt and pulley connections between the music rolls and gear supporting shaft, said means further including a shaft journalled transversely of the frame, a second treadle operated shaft supported gear on the frame, and gear connections between the transverse shaft and the shaft supporting the treadle operated gears arranged in trains to effect reverse rotation of the music rolls when the last named treadle is operated.

6. In a music stand, a frame, spaced rolls carrying a music sheet journaled on the frame, means for selectively rotating the rolls in reverse directions, an inclined board over which the music sheet travels from one roll to the other roll, spring devices engaging the opposite edge of the sheet to hold the same in flat contact with the board, said means including a shaft journalled at the lower end of the frame, a gear journalled on the shaft, pawl and ratchet mechanism for locking the gear to the shaft for effecting rotation of the shaft in one direction, a shaft supported rack segment associated with the gear, treadle mechanism for operating the rack segment, belt and pulley connections between the music rolls and gear supporting shaft, said means further including a shaft j ournalled transversely of the frame, a second treadle operated shaft supported gear on the frame, and gear connections between the transverse shaft and the shaft supporting the treadle operated gears arranged in trains to effect reverse rotation of the music rolls when the last named treadle is 0perated.

In testimony whereof I affix my signature.

EDWARD THIMGREN. 

